Vaporizing and carbureting apparatus for internal-combustion motors.



J. G. A. KITCHEN. VAPORIZINIG AND CARBURETING APPARATUS FOR INTERNAL COMBUSTlON MOTORS.

APPLICATlON FILED MAY |9. 19I7. 1,278,168.

flttomeg Pal-tented Svpf. 10, 1918. A

\ g ,1 STATES PATENT oFFIoni JOHN GEORGE AU'LSEBROOK KITCHEN, 0F LANCASTER, ENGLAND, ASSIGNOR OF ONE- HALF TO ISAAC HENRY STOREY, OF AMBLESIDE, ENGLAND.

VAPORIZING AND CARBURETING APPARATUS FOR INTERNAL-COMBUSTION MOTORS.

To all whom it may concern:

Be it known that I, J OHN GEORGE AULsn- BROOK Krrcnnn, a subject of the King of Great Britain and Ireland, residing at I iancaster, in the county of Lancaster and Kingdom of Great Britain, have invented new and useful Improvements in Vaporizing and Carbureting Apparatus for Internal-Combustion Motors, of which the following 1s a specification.

This invention consists in improvements in and relating to apparatus for vaporizing the heavier liquid hydrocarbons such as paraflin, and mixing them with air, of the kind in which the liquid hydrocarbons are fed into a vaporizer formed with a long sinuous passage and heated "with a burner,

the vaporized hydrocarbons issuing into the air induction passage leading to the motor, the admission of air into this passage being controlled by a single air throttle valve.

The object of t increase the efficiency of this type of apparatus by"reducing the tendency of the hot vapor to condense as it issues into the induction passage to the motor to a minimum and by continuously removing the condensed vapor as fast as it is formed. and returnmg it to the service fuel tank.

The improvements comprise a pump continuously worked by the motor in combination with a sump arranged in such a way that any unvaporized hydrocarbons there may be passed through the vapor nozzle (for instance at starting up of the apparatus) and vaporized hydrocarbons condensed after passin through said nozzle shall be di rected into the sump and from the sump returned by the pump into the fuel tank. The sump may have a special feature in the form of an isolated table or deflecting surface. The improvements also comprise insulating the vapor valve and'vapor nozzle from the body of the carbureting chamber and induction pipe. The vapor nozzle is arranged so that the jet of vapor issuing therefrom is directed into the sump.

In the drawings attached hereunto, my improved apparatusiis illustrated in front and side elevations Figures 1 and 2 respectivel Fig. 1 representing the apparatus part y in section.

' The vaporizer itself does not form part of this invention but it is represented in position in Fig. 1 by 1 which shows the casing ese improvements, is to Specification of Letters latent. Patented Sept, 10 1918,

Application filed May 19, m7. Serial No. 169,755.

thereof. The burner for heating the vaporizer is indicated by 2. The service fuel tank which in the apparatus being described is assumed to be under a few pounds pressure, is indicated by. 3. From the tank 3 the liquid is conducted to the vaporizer by the pipes 4t and 5 and to the burner by the pipes 4 and 6. 1 I

The carburetor body is indicated by 7 and in the apparatus. described, is carried by the induction pipe 8 of the motor, which is designed to feed four cylinders, the outlet orifice of the motor induction pipe being indicated by 9. The carbureter shown has a cylindrical lug valve 10 the passage through which being indicated by the dotted lines. The valve is turned to open and close it by means of a spindle 11 on the outer end of which is fixed a toothed wheel 12. This wheel has a sectoral slot 13 formed. in its web through which a screw 14 secures it to the boss 15, the latter being pinned or keyed to the spindle 11. The vapor valve is inby the pipe 17, the vapor issuing from a small hole in the'bent' nozzle 19, in a downward direction. The vapor valve spindle 20 has a pinion 21 fixed to it, which gears with the wheel 12, and at its extreme end is pro vided with a handle 22 by which the valve is opened and closed. The valve 10 which acts as a throttle valve and through which all the air passes, the only air inlet being that at 23, is shown full open and the vapor valve is correspondingly full open. By turning the handle 22 in one direction the two valves close together. The angular adjustment of the wheel 12 on-the valve spindle 11 by means of the screw and slot adjustment nozzle 19 to be adjusted in the proper provalve 10..

For preventing as far as possible, the hydrocarbons passed through the vapor nozzle 19 and afterward condensed and those passed through in a liquid state from depositing on the walls of the induction pipe 8, I employ a sump 24 which is referably situate in a direct line with t e issuing jet, and below the induction pipe, the air inlet being beyond the jet nozzle outwardly. In the bottom of the sump is a drain hole 25 and there is centrally mounted in the sump, a plate or table 26 with its upper surportion to the air passing through the lot lit

face a, shortdistance below the bottom inside surface of the induction pipe. The jet of issuing vapor strikes this plate and the effeet is to collect unvaporized hydrocarbons, some of which may pass through at starting up the apparatus, and any condensed particles there may be in a part where they will not be unduly influenced by the rushof air to the motor. The liquid hydrocarbons run off this plate and fall into the sump. The plate 26 may be made of heat non-conducting material such as vulcanized fiber or porcelain, or metal insulated by heat non-conducting material from the stem 27 or from the body of the sump.

Between the sump and the service tank 3 is interposed a pump 28 which is driven oil the motor crank shaft either directly or indirectly, preferably at a much slower rate. It is shown driven off the valve shaft 29 of the motor by means of an eccentric 30 and strap 31. The induction valve box 32 of the pump, is connected with the bottom of the sump by means of the pipe 33, and the delivery valve box 34 is connected with the top of'the tank 3 by means of the pipe 35.

he pump works continuously and normally draws air through the inlet orifice 23 of the carbureter and forces it into the tank 3 to maintain the required pressure therein, the tank being provided with a pressure relief valve (not shown) set to open at an excess of the pressure required in the tank. Any liquid hydrocarbons there may be in the sump are also removed by the pump and returned to the tank. It isnecessary to maintain the sump free of liquid hydrocarbons.

in order to prevent condensation of the hot vapor in the vapor valve 16 and nozzle 19, these parts are insulated from the body of the carbureter. This is conveniently and efiiciently ellected by inserting a packing 36 of mica or other suitable insulating material between the flange 37 of the vapor valve and the flanged lug 38 to which it is bolted. The pinion 21 or the toothed wheel 12 may also be of heat insulating material such as vulcanized fiber or the like,

I claim:

1. In vaporizing and carbureting apparatus for motors using heavy liquid hydrocarbons such as paraffin, the combination with a vaporizer, a burner for heating it, and a fuel tank for feeding the vaporizer and burner, or a carbureting chamber communicating with the motor induction pipe on its upper side, a sump below the induction pipe and open to the latter immediately opposite the carbureter, a pump between the said fuel tank and the sump for withdrawing liquid hydrocarbons from the sump and returning them to the said tank, said pump being continuously worked by the motor,

masses 2. In, vaporizing and carbureting apparatus for motors using heavy liquid hydrocarbons such as paraiiin, the combination with a vaporizer, a burner for heating it, and a fuel tank for feeding the vaporizer and burner, of a carbureting chamber communicating with the motor induction pipe on its upper side, said -arbureter having a central downwardly directed vapor nozzle, a sump below said induction pipe open to the latter immediately opposite the carbureter, the sump having a central table below its mouth and a drain hole in. its lowest part, a pump with its suction orifice communicating with the said drain hole and with its discharge orifice communicating with the fuel tank, by means of pipes for draining the sump of liquid hydrocarbons and returning them to said tank and for-maintaining an air pressure therein, the said pump being continuously worked by the motor.

3, A carbureting apparatus for motors using heavy liquid hydrocarbons such as parafiin, comprising a chamber provided with an inlet orifice at one end, an air control valve in said orifice, a vapor nozzle below said valve, an outlet passage leading into the motor induction pipe, a sump below said outlet passage and said induction pipe, the mouth of the sump being 0 posite to said outlet passage, a central ta le in the mouth of said sump opposite to the vapor nozzle and means for continuously withdrawing liquid hydrocarbons from the sump, the supply of vapor issuing through said nozzle being controlled by a valve,

4'. lln vaporizmg and carbureting apparatus for motors using heavy liquid hydrocarbons such as parafiin, the combination with a vaporizer, a burner for heating said vaporizer and afuel tank, of a carbureting chamber having an air control valve in its inlet orifice and an inwardly directed vapor nozzle centrally disposed below said orifice and a vapor control valve, said valves being connected together so that both open and close together so as to maintain the predetermined proportions of air and vapor at all openings of said air control valve, said carbureting chamber having its outlet opening into the motor induction vpipe, a sump below said carbureting chamber with its mouth opening into the induction pipe opposite to said outlet opening of the carbureting chamber, a central table in the mouth of the said sump, and a pump continuously worked by the motor between said sump and said fuel tank, the suction orifice of said pump communicating with said sump and the discharge orifice thereof with said tank by means of pipes so that the sump is drained of liquid hydrocarbons which are returned to the tank and air pressure in the latter can be maintained at the same time 5. The combination in a vaporizing and carbureting apparatus including a chamber and air inlet thereto, a vapor nozzle in the chamber and an outlet from the chamber to the motor induction pipe, a sump and a table therein in line with thenozzle, and means for withdrawing liquid hydrocarbon from the sump. v

6. The combination in a vaporizing apparatus including a carbure ing chamber having an air inlet, a vaporizer a pipe from the vaporizer having a nozzle 1n the chamber, an outlet passage to the motor, a sump having a baflle in line with the nozzle, a fuel tank connected with the vaporizer and with said sump, and a pum between the chamber and tank for, returning liquid hydrocarbon to the tank and. maintaining air pressure in the tank.

7. The combination in a vaporizing apparatus including a carbureting chamber having an air inlet and a vapor pipe from the Vaporizer having a nozzle in the chamber, and an outlet for fuel vapor from the chamber, of a fuel supply'tank having connection with the vaporizer and said chamber, and a pump between the chamber and tank for transferring liquid hydrocarbons from the chamber to the tank and conveying air under pressure to the tank.

JOHN GEORGE AULSEBROOK KITCHEN.

Witnesses:

RIDLEY JAMES UR UHART, JAMES HARRISON SHEPHERD. 

